github - ghsa-h935-vxwx-xh2m

GHSA-H935-VXWX-XH2M

Vulnerability from github – Published: 2025-09-08 15:37 – Updated: 2025-11-14 15:30

Details

The Microsoft vulnerable driver block list is implemented as Windows Defender Application Control (WDAC) policy. On systems that do not have hypervisor-protected code integrity (HVCI) enabled, entries that specify only the to-be-signed (TBS) part of the code signer certificate are properly blocked, but entries that specify the signing certificateâ€™s TBS hash along with a 'FileAttribRef' qualifier (such as file name or version) will not be blocked. This vulnerability affects any Windows system that does not have HVCI enabled or supported (HVCI is available in Windows 10, Windows 11, and Windows Server 2016 and later). NOTE: The vendor states that the driver blocklist is intended for use with HVCI, while systems without HVCI should use App Control, and any custom blocklist entries require a granular approach for proper enforcement.

Severity ?

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2025-59033"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-420",
      "CWE-693"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-08T15:15:37Z",
    "severity": "CRITICAL"
  },
  "details": "The Microsoft vulnerable driver block list is implemented as Windows Defender Application Control (WDAC) policy. On systems that do not have hypervisor-protected code integrity (HVCI) enabled, entries that specify only the to-be-signed (TBS) part of the code signer certificate are properly blocked, but entries that specify the signing certificate\u00e2\u20ac\u2122s TBS hash along with a \u0027FileAttribRef\u0027 qualifier (such as file name or version) will not be blocked. This vulnerability affects any Windows system that does not have HVCI enabled or supported (HVCI is available in Windows 10, Windows 11, and Windows Server 2016 and later). NOTE: The vendor states that the driver blocklist is intended for use with HVCI, while systems without HVCI should use App Control, and any custom blocklist entries require a granular approach for proper enforcement.",
  "id": "GHSA-h935-vxwx-xh2m",
  "modified": "2025-11-14T15:30:36Z",
  "published": "2025-09-08T15:37:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-59033"
    },
    {
      "type": "WEB",
      "url": "https://learn.microsoft.com/en-us/windows/security/application-security/application-control/app-control-for-business/design/microsoft-recommended-driver-block-rules"
    },
    {
      "type": "WEB",
      "url": "https://learn.microsoft.com/en-us/windows/security/hardware-security/enable-virtualization-based-protection-of-code-integrity"
    },
    {
      "type": "WEB",
      "url": "https://x.com/JonnyJohnson_/status/1895103112924307727"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-59033 (GCVE-0-2025-59033)

Vulnerability from cvelistv5 – Published: 2025-09-08 00:00 – Updated: 2025-11-17 15:57

Summary

The Microsoft vulnerable driver block list is implemented as Windows Defender Application Control (WDAC) policy. Entries that specify only the to-be-signed (TBS) part of the code signer certificate are properly blocked, but entries that specify the signing certificate's TBS hash along with a 'FileAttribRef' qualifier (such as file name or version) may not be blocked, whether hypervisor-protected code integrity (HVCI) is enabled or not. NOTE: The vendor disputes this CVE ID assignment and states that the driver blocklist is intended for use with HVCI.

Severity ?

7.4 (High)


                        
                          CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-420 - Unprotected Alternate Channel

Assigner

mitre

References

URL

Tags

	https://learn.microsoft.com/en-us/windows/securit…
	https://learn.microsoft.com/en-us/windows/securit…
	https://x.com/JonnyJohnson_/status/1895103112924307727

Impacted products

	Vendor	Product	Version
	Microsoft	Windows	Affected: 10 , ≤ Server 2025 (custom)

Show details on NVD website

JSON

To clipboard

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    "adp": [
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        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 6.7,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "HIGH",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-59033",
                "options": [
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                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
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                    "Technical Impact": "total"
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                "role": "CISA Coordinator",
                "timestamp": "2025-10-30T01:13:45.514218Z",
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            "descriptions": [
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        "providerMetadata": {
          "dateUpdated": "2025-11-17T15:57:52.240Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
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    "cna": {
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          "product": "Windows",
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              "status": "affected",
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        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-H935-VXWX-XH2M

CVE-2025-59033 (GCVE-0-2025-59033)

Tags

Sightings

Nomenclature